Abstract:One of the key research areas in modern ecohydrology is studying the feedbacks beween vegetation dynamics in structure, distribution, and succession and hydrologic processes at multiple spatial and temporal scales. Coupling vegetation dynamics at multiple scales is essential to explore the mechanisms of water and sediment yield response to vegetation changes such as vegetation reestablishment, development, succession, distribution, and management practices. We reviewed literature on advances in studying the processes and mechanisms of the vegetation influence on runoff and sediment production in relations to vegetation growth, vegetation succession, vegetation patterns and distribution, as well as afforestation and deforestation. Our review suggests that empirical experimental ecohydrological research methods include laboratory approach that employs hillslope hydrodynamic theories, field hillsclope experiments, and watershed experiments. Watershed-scale simulation models are also well used in ecohydrological research. This study suggests that up-scaling the results of hydrological studies at small scales must take into account the interactions and feedbacks of geology-vegetation-hydrological processes in a hierarchical system. Understanding the feedbacks and dominant controlling mechanisms among vegetation, hydrology, erosion, and nutrient dynamics is the key to scaling research results at multiple scales Integration of landscape ecophysiological processes and hydrological processes in spatially distributed, physically-based hydrological modeling is the key to understanding the vegetation-hydrology-soil erosion and sediment yield processes.